Solder for soldering metals.



J. LAVINE.

SOLDER FOR SOLDERING METALS.

APPLICATION FILED AUG-5, l9l6 1,248,506. 7 Patented Dec. 4, 1917.

UNITED STATES PATENT OFFICE.

noon LAVINE, or LONDON, ENGLAND.

. sonnnn FOB. sonnnn'me mrrians.

Specification of Letters latent.

- Patented Dec. 4,1917.

Application flJedA ugust 5, 1816. Serial No. 118,828.

To all whom it may concern:

Be it lmown that I JACOB LAVINE, a subject of -'the King of Great Britain and Ireland, residing at 143 Shaftes'bury avenue,

-W. (3., in the county of London, England, .have invented certain new and useful Improvements in Solders for Soldering Metals, of which the following is a specification.

' This invention relates to an improved solder for soldering metals and is intended for use in a process of old soldering' wherein the gold solder is ormed in the process of soldering such as described in the sgecification of my former British Patent etters No. 22,356 of 1914, the object of the present invention being to produce av solderv aving any required proportions of silver or silver alloy and gold or gold alloy united but not alloyed, so producing a solder suitable for the process above referred to in a concrete and commercial form.

In practice and according to one form of the invention, a sheet of silver or silver alloy and a sheet of' gold or gold alloy areplaced together surface to surface and suitably united preferably by means of welding, while in a modified form of the invention, a sheet silver or silver alloy is applied to both sides of the gold or gold alloy sheet and suitably united.

In a further modification of the invention, the solder may be produced in the form of a drawn wire having an inner core of gold or gold allo andl-a'n outer covering of silver or silver'a 0y, again, in some forms of the solder, it may, consist of a fine chain comprising gold or gold alloy and silver or silver alloy links, with links of the one alternated or interspersed with those of the other.

In all forms of the solder, the respective qualities of the gold or gold alloy and silver or silver alloy may bevaried so as to roduce any standard of gold solder required.

In ractice the. solder is used and employe in a manner exactly similar to an ordinary old solder.

In'the rawings, Figure 1.is a perspective view of a plate of solder constructed according to'this invention. Fig. 2 is also aperspective view,"and shows a" modification of the plate shown in Fig. 1. Fig. 3 ista cross-section throu h a wire or bar' of the improved'solder. ig. 4-is a side view of a chain constructed of soldering gold and soldering silver accordin to this invention.

The'soldering gold g 1s permanently secured close proximity to the soldering silver 8 by welding or other approved way, but without alloying the two' metals. The metals become alloyed and form the solder at the time of use in-soldering, and the two form a gold soldered joint.

What I claim is:

resent an exposed sur- 1. A solder formed of a body portion of soldering old, and a relatively small quantity of so dering silver having an exposed surface andpermanently secured. against the said body portion. p 2. A solder formed of a relatively thick. body portion of soldering gold inclosed between a relatively small outer coating of soldering silver which has an exposed surface and is permanently secured against the said body portion.

In testimony whereof I aflixmy signature in the presence of two witnesses.

. JACOB LAVINE. Witnesses: CONSTANCE MURRAY, Onan'ms LEASON. 

